The fresher the coffee ground the better. If the coffee ground is old and moldy, you will need to pasteurize or sterilize it depending on your growing setup. If you don't "clean" the moldy coffee ground, you will notice a multitude of different fungi and bacteria growing on your King Oyster mycelium...not a pretty sight! Even though many cultivators allow contaminations, we prefer to keep them out completely.
After testing ten different proven substrates with every culture we isolate, our findings show that best ingredients for growing Oyster mushrooms are: straw, wood chip, coffee grounds and bran.
The grow bags that we provide have our own unique filter. We have tried using smaller bags and thus far, this bag works best.
200g of King Oyster spawn is enough to inoculate 2kgs of coffee grounds.
If you need assistance with commercial growing techniques, please contact us
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